Discrete Mathematics
Discrete Mathematics > 2011 > 311 > 4 > 324-326
Discrete Mathematics > 2011 > 311 > 8-9 > 738-755
Discrete Mathematics > 2011 > 311 > 21 > 2384-2395
Discrete Mathematics > 2011 > 311 > 22 > 2587-2592
Discrete Mathematics > 2011 > 311 > 23-24 > 2683-2689